<template>
  <view v-if="goods_info.goods_name" class="goods-contanier-box">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="priview(i)"></image>
      </swiper-item>
    </swiper>
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 价格信息 -->
      <view class="goods-info-price">￥{{goods_info.goods_price}}</view>
      <!-- 商品介绍 -->
      <view class="goods-info-body">
        <view class="goods-info-text">{{goods_info.goods_name}}</view>
        <!-- 收藏区域 -->
        <view class="favi">
          <uni-icons type="heart" size="15"></uni-icons>
          <text>收藏</text>
        </view>
        
      </view>
      <!-- 快递信息 -->
      <view class="goods-info-fast">
        <view class="goods-fast-text">
          快递：免运费 
        </view>
      </view>
    </view>
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    
    <!-- 商品导航栏 -->
    <view class="goods_nav">
       <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import { mapMutations,mapGetters } from 'vuex'
  export default {
  computed:{
    ...mapGetters('my_card',['total'])
  },
  watch:{
    // 1. 监听 total 值的变化，通过第一个形参得到变化后的新值
   //     total(newVal) {
   //       // 2. 通过数组的 find() 方法，找到购物车按钮的配置对象
   //       const findResult = this.options.find((x) => x.text === '购物车')
   
   //       if (findResult) {
   //         // 3. 动态为购物车按钮的 info 属性赋值
   //         findResult.info = newVal
   //       }
   //     }
   total:{
     handler(newVal){
       const findResult = this.options.find((x) => x.text === '购物车')
       if (findResult) {
               findResult.info = newVal
             }
     },
     immediate:true
   }
  },
    data() {
      return {
        goods_info:{},
          options: [{
                    icon: 'headphones',
                    text: '客服'
                }, {
                    icon: 'shop',
                    text: '店铺',
                    infoBackgroundColor:'#007aff',
                    infoColor:"red"
                }, {
                    icon: 'cart',
                    text: '购物车',
                    info: 0
                }],
                buttonGroup: [{
                  text: '加入购物车',
                  backgroundColor: '#ff0000',
                  color: '#fff'
                },
                {
                  text: '立即购买',
                  backgroundColor: '#ffa200',
                  color: '#fff'
                }
                ]
      };
    },
    onLoad(options){
      console.log(options)
      const goods_id = options.goods_id
      this.getGoodInfo(goods_id)
    },
    methods:{
      ...mapMutations('my_card',['addToCart']),
     async getGoodInfo(goods_id){
        const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
        console.log(res)
        if(res.meta.status!=200) return uni.$showMsg()
         this.goods_info=res.message
         res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g ,'<img style="display:block;"').replace(/webp/g,'jpg')
      },
      priview(i){
        uni.previewImage({
          current:i,
          urls:this.goods_info.pics.map(x=>x.pics_big)
        })
      },
      onClick(e){
        console.log(e)
        if(e.content.text==="购物车"){
          uni.switchTab({
            url:'/pages/card/card'
          })
        }
      },
      buttonClick(e){
        // console.log(e)
        // 1. 判断是否点击了 加入购物车 按钮
        if(e.content.text==='加入购物车'){
           // 2. 组织一个商品的信息对象
          const goods = {
             goods_id: this.goods_info.goods_id, // 商品的Id
             goods_name: this.goods_info.goods_name, // 商品的名称
             goods_price: this.goods_info.goods_price, // 商品的价格
             goods_count: 1, // 商品的数量
             goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
             goods_state: true  // 商品的勾选状态
          }
           // 3. 通过 this 调用映射过来的 addToCart 方法，把商品信息对象存储到购物车中
          this.addToCart(goods)
        }
      }
      
    }
  }
</script>

<style lang="scss">
swiper {
  height: 750rpx;
  image {
    width: 100%;
    height: 100%;
  }
}
.goods-info-box {
  padding: 10px;
  padding-right: 0;
  .goods-info-price {
    color: #c00000;
    font-size: 18px;
    margin: 5px 0;
  }
  .goods-info-body {
    display: flex;
    justify-content: space-between;
    .goods-info-text {
      font-size: 13px;
      margin-right: 10px;
    }
    .favi {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-left: 1px solid #efefef;
      width: 120px;
      font-size: 12px;
      color: gray;
    }
  }
  .goods-info-fast{
    margin-top: 10px;
    .goods-fast-text {
      font-size: 12px;
      color: gray;
    }
  }
  
}
.goods_nav {
  position:fixed;
  bottom:0;
  left:0;
  width: 100%;
}
.goods-contanier-box {
  padding-bottom: 50px;
}

</style>
